Celebrate the start of our second century by visiting a park in 2017. During ten days of the year, all National Park Service sites that charge an entrance fee will offer free admission to everyone.

Mark your calendar for these entrance fee–free dates in 2017:

January 16: Martin Luther King Jr. Day
February 20: Presidents' Day
April 15-16 and 22-23: Weekends of National Park Week
August 25: National Park Service Birthday
September 30: National Public Lands Day
November 11-12: Veterans Day Weekend